NZ749621A - Method for modifying concrete slab on subsided ground - Google Patents

Method for modifying concrete slab on subsided ground

Info

Publication number
NZ749621A
NZ749621A NZ749621A NZ74962117A NZ749621A NZ 749621 A NZ749621 A NZ 749621A NZ 749621 A NZ749621 A NZ 749621A NZ 74962117 A NZ74962117 A NZ 74962117A NZ 749621 A NZ749621 A NZ 749621A
Authority
NZ
New Zealand
Prior art keywords
expandable resin
concrete slab
point
points
injecting
Prior art date
Application number
NZ749621A
Inventor
Nobukazu MATSUDO
Koji Kawaguchi
Original Assignee
Upcon Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Upcon Corp filed Critical Upcon Corp
Publication of NZ749621A publication Critical patent/NZ749621A/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0288—Repairing or restoring floor slabs
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/10—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for raising or levelling sunken paving; for filling voids under paving; for introducing material into substructure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0203—Arrangements for filling cracks or cavities in building constructions
    • E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

The present invention is a method for modifying a concrete slab on subsided ground, comprising injecting an expandable resin therebelow from an injection hole drilled in the concrete slab. The method includes steps of: on a concrete slab in an area including a region where ground subsidence has occurred, determining points to drill injection holes for injecting an expandable resin at a pitch of 0.5 to 2.0 m in a grid pattern or a staggered pattern; specifying, from the determined points, a point where the subsidence of the concrete slab is severest; injecting an expandable resin therebelow from an injection hole drilled in the specified point; and expanding the expandable resin to push up the concrete slab at most 30 mm, sequentially followed by steps of: specifying a point where the subsidence of the concrete slab is severest after the previous step has been performed; injecting an expandable resin therebelow from an injection hole drilled in the specified point; and expanding the expandable resin to push up the concrete slab at most 30 mm, thereby making the entire concrete slab a predetermined height. The points are set at a pitch of 0.5 to 2.0 m in a grid pattern or a staggered pattern so that, under easy control of the work process, the expandable resin will be injected and expanded below the concrete slab uniformly in and around the region where ground subsidence has occurred. In the case where the pitch is more than 2.0 m, even when an expandable resin is injected below two adjacent points, it may happen that the expandable resin does not spread below the gap between the points, causing a situation where a space or weak ground remains there. When the pitch is made less than 0.5 m, it may happen that the expandable resin that has been injected below the adjoining point also spreads below such a point, whereby it becomes unnecessary to inject an expandable resin below the point, or a work burden is caused due to an increase in the number of steps.
NZ749621A 2016-05-31 2017-05-31 Method for modifying concrete slab on subsided ground NZ749621A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016109632 2016-05-31
PCT/JP2017/020184 WO2017209160A1 (en) 2016-05-31 2017-05-31 Method for correcting concrete slab on sunk ground

Publications (1)

Publication Number Publication Date
NZ749621A true NZ749621A (en) 2019-12-20

Family

ID=60421367

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ749621A NZ749621A (en) 2016-05-31 2017-05-31 Method for modifying concrete slab on subsided ground

Country Status (5)

Country Link
US (2) US10047534B2 (en)
JP (1) JP6302611B1 (en)
AU (1) AU2017272764B2 (en)
NZ (1) NZ749621A (en)
WO (1) WO2017209160A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018124251A1 (en) * 2016-12-27 2018-07-05 アップコン株式会社 Method for correcting concrete plate tilting on subsided ground
CN109898498A (en) * 2019-03-20 2019-06-18 中亿丰建设集团股份有限公司 A kind of terrace settlement treatment method
US10914085B1 (en) * 2020-01-15 2021-02-09 John Mucciarone System and method for providing a level flooring surface
US20230039678A1 (en) 2020-01-23 2023-02-09 Gate Gourmet Switzerland Gmbh Method of producing a cellulose-based product
GB2614319A (en) * 2021-12-29 2023-07-05 Geobear Int Oy Railway Track Bed Strengthening
JP7366335B1 (en) 2022-04-13 2023-10-23 国土交通省国土技術政策総合研究所長 How to repair cavities

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1915032A (en) * 1930-05-13 1933-06-20 Nat Equip Corp Method of and means for correcting paving settlements
US4352262A (en) * 1980-08-18 1982-10-05 Edelmann Frank E Method of sealing cracks and apparatus therefor
FI823299L (en) * 1982-09-27 1984-03-28 Uretaanitekniikka Oy PROCEDURE FOR THE PURPOSE OF BUCKETS
JPH0739669B2 (en) * 1986-07-23 1995-05-01 株式会社竹中工務店 Structures such as foundation slabs that can be easily repaired by subsidence
JP3126896B2 (en) * 1995-03-22 2001-01-22 平成テクノス株式会社 Restoration method for uneven settlement structures
JP3653305B2 (en) * 1995-04-26 2005-05-25 平成テクノス株式会社 Restoration method for uneven settlement
US6521673B1 (en) * 1999-11-03 2003-02-18 Polythane Systems, Inc. Composition and method for preparing polyurethanes and polyurethane foams
US8186907B1 (en) * 2000-10-13 2012-05-29 Charles Lee Asplin Slab leveling system and method
US6976804B1 (en) * 2003-08-26 2005-12-20 Charles Lee Asplin Method of repairing damaged concrete slabs
JP2006144269A (en) * 2004-11-16 2006-06-08 Tenwa Matsufuji Restoring method of foundation structure
JP4896949B2 (en) 2008-11-26 2012-03-14 ウレテックジャパン株式会社 Correction method of subsidence floor
JP5168206B2 (en) * 2009-03-30 2013-03-21 平成テクノス株式会社 Ground improvement method
JP5278856B2 (en) * 2009-05-08 2013-09-04 平成テクノス株式会社 Ground improvement method
US8092116B1 (en) * 2010-08-11 2012-01-10 Charles Lee Asplin Slab raising method
AU2013203973A1 (en) 2012-12-13 2014-07-03 Rigid Ground Pty Ltd Treating particulate and connecting slab portions
US9926671B2 (en) * 2014-01-10 2018-03-27 Kangwon National University University—Industry Cooperation Foundation Method for repairing paved road

Also Published As

Publication number Publication date
US10047534B2 (en) 2018-08-14
AU2017272764B2 (en) 2021-11-11
JP6302611B1 (en) 2018-03-28
US11661756B2 (en) 2023-05-30
US20210222446A1 (en) 2021-07-22
WO2017209160A1 (en) 2017-12-07
AU2017272764A1 (en) 2019-01-17
JPWO2017209160A1 (en) 2018-06-21
US20170342730A1 (en) 2017-11-30

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